Journal of Northern Agriculture ›› 2025, Vol. 53 ›› Issue (1): 10-16.doi: 10.12190/j.issn.2096-1197.2025.01.02

• Corp cultivation·Germplasm resources • Previous Articles     Next Articles

Analysis of factors influencing the maize mechanical grain harvest quality in the western of Hexi Corridor

SHEN Xiaohua1,2, NIU Tianwen2, ZHAO Haonan1, LI Wenjun3, HOU Liangyu1,2   

  1. 1. College of Agriculture and Ecological Engineering,Hexi University,Zhangye 734000,China;
    2. Zhangye Fengchao Smart Agricultural Technology Co.,Ltd.,Zhangye 734000,China;
    3. College of Economics and Management,Hexi University,Zhangye 734000,China
  • Received:2024-07-29 Online:2025-02-20 Published:2025-06-26

Abstract: 【Objective】To improve the maize harvest quality and to extend the application of maize mechanical grain harvesting in western Hexi Corridor.【Methods】In 2023,the harvest quality test in field of 10 different maize cultivars was carried out in Xiaheqing Farm,Jiuquan City,Gansu Province in which,the same mechanical was used to harvest and the the grain moisture content,grain breakage rate,impurity rate,and field loss rate of sampled and tested after harvest.【Results】On average,the grain moisture content,grain breakage rate,impurity rate,and field loss rate of tested cultivars were 26.25 % with a variation of 17.80%-33.10%,8.13% with a variation of 2.96%-19.80%,0.86 % with a variation of 0.02%-3.26%,and 3.58% with a variation of 3.51%-3.64%,respectively. There was a extremely significant positive correlation between grain breakage rate and grain moisture content(P<0.01),which could be described with a fitting equation:y=-0.466 1e0.100 2xR2=0.405 7) that grain breakage rate would reach its lowest when grain moisture content were 17.10%;another extremely significant positive correlation was also found between impurity rate andgrain moisture content(P<0.01),which could be described with a fitting equation:y=0.001 5e0.217 7xR2=0.454 7) that impurity rate would be minimized when grain moisture content were 16.40%;while field loss rate was negatively correlated with grain moisture content,which could be described with a fitting equation:y=1E-06x4-0.000 3x3+0.015 3x3-0.324 0x+5.928 2(R2=0.299 2) that field loss rate would be the least when grain moisture content were 20.20%.【Conclusion】The overhigh grain moisture content on harvesting is the major affecting factor on the maize mechanical grain harvesting quality in the western of Hexi Corridor. By selecting suitable cultivars and scientifically arranging harvesting time,the maize mechanical grain harvesting quality will be improved in the western Hexi Corridor.

Key words: Western Hexi Corridor, Maize, Mechanical grain harvesting, Harvest quality

CLC Number: 

  • S513